Home / 18,693.56-25,794.15-11,139.70

Finding the Fourth Proportional to 18,693.56, 25,794.15 and 11,139.70

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Solution

The fourth proportional to 18,693.56, 25,794.15 and 11,139.70 is: 15,371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.56 : 25,794.15 = 11,139.70 : x
  2. Step 2: Convert to fraction form
    18,693.56/25,794.15 = 11,139.70/x
  3. Step 3: Cross multiply
    18,693.56x = 25,794.15 × 11,139.70
  4. Step 4: Simplify right side
    18,693.56x = 287,339,092.76
  5. Step 5: Solve for x
    x = 287,339,092.76/18,693.56
  6. Step 6: Final answer
    x = 15,371.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.